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Finding the Fourth Proportional to 20,689,552.20, 30,981,184.20 and 16,402,594.80

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Solution

The fourth proportional to 20,689,552.20, 30,981,184.20 and 16,402,594.80 is: 24,561,759.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,689,552.20 : 30,981,184.20 = 16,402,594.80 : x
  2. Step 2: Convert to fraction form
    20,689,552.20/30,981,184.20 = 16,402,594.80/x
  3. Step 3: Cross multiply
    20,689,552.20x = 30,981,184.20 × 16,402,594.80
  4. Step 4: Simplify right side
    20,689,552.20x = 508,171,810,856,762.19
  5. Step 5: Solve for x
    x = 508,171,810,856,762.19/20,689,552.20
  6. Step 6: Final answer
    x = 24,561,759.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.